<template>
    <div>
        <div class="search-wrapper">
            <input type="text" class="search-input" placeholder="输入城市名或拼音" v-model="keyword">   
        </div>
        <div class="search-content" ref="search" v-show="keyword">
            <ul>
                <li class="search-item border-bottom" v-for="item of list" :key="item.id" @click="handleCityClick(item.name)">{{item.name}}</li>
                <li class="search-item border-bottom" v-show="hasNoData">No Search</li>
            </ul>
        </div>
    </div>
</template>

<script>
import BScroll from "better-scroll"
import { mapMutations } from 'vuex'
export default {
    name: 'CitySearch',
    props: {
        cities: Object
    },
    data () {
        return {
            keyword: '',
            list: [],
            timer: null
        }
    },
    mounted () {
        this.scroll = new BScroll(this.$refs.search)
    },
    computed: {
        hasNoData () {
            return !this.list.length
        }
    },
    watch: {
        keyword () {
            if(this.timer){
                clearTimeout(this.timer)
            }
            if(!this.keyword){
                this.list=[]
                return
            }
            this.timer=setTimeout(()=>{
                const resule=[]
                for(let i in this.cities){//遍历cities对象
                    this.cities[i].forEach((value)=>{//遍历cities对象中的每一项
                        if(value.spell.indexOf(this.keyword) > -1|| value.name.indexOf(this.keyword) > -1){//如果value的spell或name中包含keyword字符串
                            resule.push(value)//符合的push到result
                        }
                    })
                }
                this.list=resule//结果放到list中
            },100)
        }
    },
    methods: {
        handleCityClick (city) {
            //this.$store.commit('changeCity',city)
            this.changeCity(city)
            this.$router.push('/')
        },
        ...mapMutations(['changeCity'])
    }
}
</script>

<style lang="stylus" scoped>
    .search-wrapper
        height: .72rem
        padding: 0 .15rem
        .search-input
            box-sizing: border-box
            width: 100%
            height: .62rem
            line-height: .62rem
            border-radius: .1rem
            color: #666
            padding: 0 .1rem
    .search-content
        z-index: 1
        overflow: hidden
        position: absolute
        left: 0
        top: 1.58rem
        right: 0
        bottom: 0
        background: #eee
        .search-item
            line-height: .62rem
            padding-left: .2rem
            background: #fff
            color: #666
</style>
